Steam-turbine combined intermediate reheating quasi-Carnot-cycle thermal power generation system
A technology of thermal power generation and Carnot cycle, applied in the direction of steam engine devices, machines/engines, mechanical equipment, etc., can solve the difficult problems of energy saving and emission reduction, achieve the effect of perfecting the heat absorption process and improving thermodynamic perfection
Active Publication Date: 2015-03-18
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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[0005] The present invention aims at the difficult problem that the existing steam turbine generator sets need to further save energy and reduce emissions, and proposes a steam turbine composite intermediate reheat quasi-Carnot cycle thermal power generation system. The system adds a steam turbine and an external double steam flow The flue gas heat exchanger constitutes a steam turbine compound intermediate reheating quasi-Carnot cycle thermal power generation system. For newly built units, the efficiency of the thermal power generation system is significantly improved; for operating steam turbine generator units, it can also increase the power generation and improve the circulation at the same time. Thermal efficiency
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[0014] Such as figure 1 Shown is a connection diagram of a steam turbine composite intermediate reheat quasi-Carnot cycle thermal system of the present invention, including a thermal power plant boiler 1, an external double-steam flow flue gas heat exchanger 2, the first cylinder 3 of the steam turbine, and the second cylinder 4. Reheater 5, third cylinder 6, condenser 7, feed water pump 8, pipelines 9, 10, 11, 12, 13, 14, 15, 16, 17, 20, 21. The superheated steam from the boiler 1 of the thermal power plant is divided into two parts. One part of the steam flows through the pipeline 10 and enters the external double-steam flow flue gas heat exchanger 2 to be heated, and then enters the first cylinder 3 of the steam turbine through the pipeline 11 to perform work; the other part The steam flow passes through the pipeline 9 and enters the second cylinder 4 to do work. The first composite reheated steam flow after the second cylinder does work passes through the pipeline 17 and e...
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The invention relates to a steam-turbine combined intermediate reheating quasi-Carnot-cycle thermal power generation system. According to a thermal power station principle, the steam-turbine combined intermediate reheating quasi-Carnot-cycle thermal power generation system is composed of a thermal-power-station boiler, an external double-steam-flow flue-gas heat exchanger, a steam turbine, an electric generator, a steam condenser, a water feed pump and a pipeline, wherein the thermal-power-station boiler is provided with a re-heater, an endothermic process of a steam power cycle is improved fully, and cycle thermal efficiency is enhanced. As for a new unit, efficiency of the thermal power generation system is improved obviously; as for a running steam-turbine generator unit, the amount of generated electricity can be increased, and meanwhile the cycle thermal efficiency is improved.
Description
technical field [0001] The invention relates to a thermal power generation system, in particular to a steam turbine compound intermediate reheat quasi-Carnot cycle thermal power generation system. Background technique [0002] The "Twelfth Five-Year Plan" puts forward two binding goals of energy saving and emission reduction for my country's electric power industry. Thermal power units still account for more than 60% of my country's future energy structure. With the optimization of energy structure and the improvement of environmental protection requirements, The requirements for further energy saving and emission reduction are getting higher and higher, and the difficulty is getting bigger and bigger. [0003] Research and development of high-parameter, large-capacity thermal power generating units to improve the thermodynamic perfection of the steam power cycle has always been an important topic in the field of thermodynamics and energy engineering. At the same time, i...
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IPC IPC(8): F01K17/00F01K23/10
CPCY02P80/15
Inventor 石奇光金蓉张静秋李瑞雪
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER